From the tuning that's on current alpha build F&F release that we can play, seems like bears are a bit strong, at least up to 92. There's still no need for an external healer, YG + FR are more than enough (in conjunction with T&C). Currently no timer/expiration to the druid mastery bubble, either. I think the rage gen would take some time to get used it, as it feels like it ramps up faster than we're used to, especially with multiple mobs available (read as, it could be easier to rage cap on accident). Keep in mind, this is just a tiny snapshot of what's currently available.